Some Improvements

lib/elems/filehandler.dart

@@ -21,6 +21,13 @@ class FileHandler {
     return js;
   }
 
+  static Future<void> saveNotified(String listName, String todoName, String notifyType, bool value) async {
+    Map content = await fileContent;
+    content[listName][todoName][notifyType] = value;
+
+    await saveFile(content);
+  }
+
   static Future<void> saveFile(js) async {
     File f = await localFile;
     String content = json.encode(js);

lib/elems/todo.dart

@@ -1,10 +1,12 @@
 import 'package:flutter/material.dart';
 
 class Todo {
-  Todo({required this.title, required this.widget, required this.checked, required this.dueTime});
+  Todo({required this.title, required this.widget, required this.checked, required this.dueTime, required this.notifiedDay, required this.notifiedHour});
 
   String title;
   Widget widget;
   DateTime dueTime;
   bool checked;
+  bool notifiedHour;
+  bool notifiedDay;
 }